28 results about "Plasma polymerization" patented technology

The invention relates to a pro-biofilm coating applied by means of cold atmospheric plasma polymerization of a precursor on a substrate. The coating has a roughness such that it promotes the creation of more than 100% biofilm on the substrate, where the 100% of biofilm is the one as produced on the same substrate being devoid of said pro-biofilm coating. The invention also relates to a method of producing said pro-biofilm coating and a substrate coated with same.

The invention relates to a method for producing a fabric having hydrophobic and oleophobic properties, said fabric having a halogen-free plasma coating, whereby the method comprises: a step DHF of depositing a plasma coating on the fabric by plasma-enhanced chemical vapor deposition (PECVD) by means of plasma polymerization of halogen-free precursor monomers, wherein the halogen-free precursor monomer is an organosilane, siloxane and / or hydrocarbon precursor wherein the plasma enhanced chemical vapor deposition is carried out under a protective atmosphere as a low pressure plasma process wherein the fabric comprises a woven monofilament fabric of polymeric material having a filament diameter of 10 [mu] m to 150 [mu] m and meshes of between 5 [mu] m and 200 [mu] m.

To provide a novel acrylic acid plasma polymerization film excellent in heat resistance, solvent resistance, hardness, and transparency.SOLUTION: The present invention is an acrylic acid plasma polymerization film comprising C: 35-45 atom%, O: 7-12 atom%, and the balance being H and impurities. The plasma polymerization film exhibits, in an infrared absorption spectrum, for example, a peak intensity ratio satisfying C=O group / C-H group: 0.7-1.8 and C-O group / C-H group: 0.2-3.5, and in a Raman spectrum, for example, a peak intensity ratio satisfying C=C group / C-H group: 0.03-0.25 and C=C group / C=O group: 0.1-1.7. The plasma polymerization film has, for example, a film thickness of 20-1000 nm and a visible light transmittance of 85% or more.SELECTED DRAWING: Figure 2A

A method of forming an insulating film includes supplying a precursor gas to a substrate to generate a fluidic oligomer by plasma polymerization and deposit the fluidic oligomer on the substrate, performing a plasma process on the substrate after the depositing the fluidic oligomer, so that at least a part of the fluidic oligomer is hydrogen-terminated while maintaining fluidity of the fluidic oligomer, and subsequently performing an annealing process, which includes a plasma process, on the substrate to form the insulating film.

A specific embodiment of the present invention provides a composite coating, manufacturing method, and device, comprising Coating I and Coating II, where Coating I is formed by plasma polymerization of a silane monomer containing an active functional group having affinity or reactivity with polymer molecules and a hydrolyzable group such as a halogen atom, an alkoxy group, or an acyloxy group, and Coating II is formed by vacuum vapor deposition of parylene on Coating I, and the composite coating improves the bonding strength and coverage of the parylene coating to the substrate.

The invention relates to a method of producing a fabric having a halogen free plasma coating, having a hydro- and oleophobic characteristics, wherein the method comprises: step DHF of depositing a plasma coating on the fabric by means of plasma polymerization of a halogen free precursor monomer by plasma-enhanced chemical vapor deposition method (PECVD), wherein the halogen free precursor monomer are organosilane, siloxane and / or hydrocarbon precursors, wherein the plasma-enhanced chemical vapor deposition is carried out as a low-pressure plasma processes under protective atmosphere, wherein the fabric comprises of a woven monofilament fabric of polymeric material having a filament diameter between 10 μm to 150 μm and a mesh opening between 5 μm and 200 μm.

To provide a method of producing a fabric having a plasma coating which has a hydro- and oleophobic characteristics and is free from halogen, particularly free from perfluoroalkyl substances and polyfluoroalkyl substances (PFAS).SOLUTION: The invention relates to a method of producing a fabric having a halogen-free plasma coating having a hydro- and oleophobic characteristics, where the method comprises: a step DHF of depositing a plasma coating on the fabric by means of plasma polymerization of a halogen-free precursor monomer by plasma-enhanced chemical vapor deposition method (PECVD), where the halogen-free precursor monomer are organosilane, siloxane and / or hydrocarbon precursors, where the plasma-enhanced vapor deposition is carried out as a low-pressure plasma processes under protective atmosphere, where the fabric comprises a woven monofilament fabric of polymeric material having a filament diameter of 10 μm to 150 μm and a mesh opening of 5 μm to 200 μm.SELECTED DRAWING: Figure 1

The invention discloses a polypropylene spunbond non-woven fabric based on plasma polymerization modification, the polypropylene spunbond non-woven fabric comprises a gradient functional layer, a gradient functional layer base material layer and a surface functional layer, the surface functional layer comprises an inner layer, an interlayer and an outer layer, the inner layer comprises an ion activation layer, the thickness of the ion activation layer is 50-200nm, and the thickness of the interlayer is 50-200nm. The ion activation layer is formed through argon-oxygen mixed plasma etching, and the surface roughness Ra of the ion activation layer is greater than or equal to 0.5 mu m; the interlayer comprises a copolymer transition layer, and the thickness of the copolymer transition layer is 300-800 nm. Through the synergistic effect of the nano zinc oxide and the tannic acid-silver composite coating layer, the good effect that the bacteriostasis rate on staphylococcus aureus is larger than or equal to 99.5% is achieved, the bacteriostasis rate of the non-woven fabric is still kept to be larger than or equal to 95% after the non-woven fabric is washed with water for 50 times, and tannic acid serves as a natural reducing agent and stabilizer, so that the dispersity and antibacterial durability of silver nanoparticles are enhanced.

The invention relates to the technical field of anticoagulant coatings, and discloses an ePTFE membrane grafted with a heparin and aminated hyaluronic acid coating and a preparation method. According to the method for preparing the ePTFE membrane grafted with the heparin and aminated hyaluronic acid coating, a primer layer is formed on the surface of the ePTFE membrane in a plasma polymerization mode, and heparin and hyaluronic acid are chemically and covalently grafted on the primer layer, so that the surface of the membrane has long-term stability and an anticoagulation effect; the problems that in the prior art, reaction is complex, solvent residues easily exist, stability is poor, the anticoagulant effect is poor, and gaps are blocked are solved.

The invention relates to the technical field of surface treatment, and discloses a high-hardness sawtooth sputter coating method which comprises the steps of multi-element corrosion inhibitor composite conversion film treatment, boron-containing nitride double-layer sputter coating, sol-gel compact sealing layer treatment, chemical vapor infiltration strengthening treatment and low-temperature plasma polymerization hole sealing treatment. According to the method, a Cr-Mo-W-rare earth-organic phosphonic acid composite conversion film, an AlTiB (C) N superhard bottom layer, an AlCrNO corrosion-resistant surface layer, a SiO2-Al2O3 compact gel layer, a CVI strengthening layer and a SiOC polymer hole sealing layer are sequentially formed on the surface of a sawtooth base body, and a sextuple synergistic protection structure is constructed. The surface hardness of the obtained coating reaches HV4500-5000, the corrosion resistance to various corrosive media such as acidity, alkalinity, salt mist and sulfide is remarkably improved, the service life is prolonged by 4-6 times, and the problem of rapid failure of the high-hardness boron-containing nitride coating in a complex corrosive environment is solved.

To improve the membrane coating characteristics in ion exchange membrane applications using woven mesh fabric as a reinforcing material. [Solution] A woven mesh fabric containing monofilament fibers in the warp and weft of one of the polymers polyphenylene sulfide, polyether ether ketone, and liquid crystal polyester is subjected to at least one heat treatment to fix the mesh openings to a desired size, stabilize the monofilament fibers, and remove surface contaminants. One or more pretreatment steps are carried out, including a plasma pretreatment step and / or a plasma etching step. A plasma coating is deposited on the woven mesh fabric by plasma polymerization incorporating at least one functional group selected from the group consisting of hydroxyl groups, carboxyl groups, amino groups, and sulfonic acid groups. The woven mesh fabric has a filament diameter of 10 μm to 60 μm, a mesh opening of 20 μm or more, and a fabric thickness of 20 μm to 80 μm.

The invention discloses a physical vapor deposition (PVD) coating method for a broken bridge aluminum profile, which is characterized in that a high-performance composite coating is formed on the surface of the profile through precise pretreatment, optimized multi-level PVD deposition and optional plasma polymerization post-treatment. Wherein the deposition process is completed in a special PVD coating system, and the system ensures that a complex-section profile with the length of 6 meters obtains a uniform film layer through the design of a planet carrier capable of revolving and rotating and a plasma enhancing device. According to the method, the problems of uniformity and binding force of long building materials treated through a traditional PVD technology are solved, the obtained coating has excellent hardness (larger than or equal to HV1500), corrosion resistance (neutral salt mist is larger than or equal to 1000 hours) and rich decoration effects, the whole process is environmentally friendly, and an innovative surface solution is provided for high-end broken bridge aluminum doors and windows.

The invention aims to introduce an imidazole amino acid ionic liquid into a poly (ethylene oxide) membrane. A series of amino acid ionic liquid / poly (ethylene oxide) composite membranes are prepared by adopting a low-temperature plasma polymerization process and are used for overcoming the defect that the carbon dioxide / nitrogen selectivity of the poly (ethylene oxide) membrane is quickly reduced along with the rise of temperature. The preparation method specifically comprises the following steps: preparing amino acid ionic liquid by adopting a conventional method, preparing a separation layer solution through solution blending for soaking a base membrane, and finally putting the composite membrane into a low-temperature plasma reaction kettle for induced polymerization. The composite membrane is excellent in carbon dioxide / nitrogen permeation separation performance and has industrial application potential.

The embodiment of the present application provides a protective coating and a preparation method thereof, the protective coating is formed by plasma polymerization coating on the surface of an electronic device, an electrical device, an electronic component or an electrical component, the protective coating is formed by plasma of monomer alpha with a double acrylate structure and monomer beta with more than three carbon-carbon unsaturated bonds, the mass fraction of the monomer beta accounts for 10-35% of the total monomer, and the protective coating can effectively prevent the electronic device, the electrical device, the electronic component or the electrical component from short circuit and failure in a humid or water environment.

According to the invention, there is provided a method of treating a component of a medicament dispensing device wherein the component is an aluminum can having an interior comprising an inner surface that is in contact with a medicament during storage or use of the device, the method comprising the steps of: placing the aluminum can in a chamber; inserting an electrode into the aluminum pot; performing a plasma cleaning step in which a gaseous atmosphere consisting essentially of oxygen and optionally at least one fluorocarbon is introduced into the chamber and a cleaning plasma is generated in the gaseous atmosphere using the electrode in order to clean the aluminum can, the inner surface of the chamber and the electrode; optionally coating the inner surface of the aluminum can with a coating; and depositing a fluorocarbon polymer layer onto the inner surface of the aluminum can by plasma polymerization, or, if present, onto a coating.

The application relates to a catalytic membrane for removal of carbon dioxide from a gas mixture. The catalytic membrane comprises a functional hydrophilic polymeric layer formed by plasma polymerization, having a thickness from 5 to 100 nanometres, comprising carboxylic acid functional groups and a catalytic agent. Below the functional hydrophilic polymeric layer, a tracketched layer is positioned. This track-etched layer is made of thermoplastic polymer and has cylindrical nanochannels, each with a diameter from 100 to 800 nanometres, a length from 20 to 100 micrometers, and the immobilized catalytic agent. The density of nanochannels is in a range from 10⁶ to 10⁸ nanochannels / cm² of the track-etched layer. The application also relates to a method for producing the catalytic membrane.

The invention discloses a method for preparing a nitric oxide film through atmospheric pressure plasma jet, and belongs to the technical field of plasma medicine. The method comprises the following steps: constructing an atmospheric pressure plasma jet reaction system; inert gas is used as carrier gas, and TEMPO (2, 2, 6, 6-tetramethylpiperidine oxide) monomer steam is carried to enter plasma jet; and controlling the discharge power to be 0.4-2.4 W and the distance between the bottom end of the dielectric tube and the substrate to be 4-6 mm at normal temperature and normal pressure, so that the TEMPO monomer is subjected to plasma polymerization, and the nitric oxide functional film is deposited on the surface of the substrate. The APPJ technology and the TEMPO monomer are combined for the first time, high-content nitrogen-oxygen (N-O) functional groups are successfully reserved in the film through operation under specific mild process parameters, and an efficient, lossless and easy-to-industrialize new way is provided for preparing NO release coatings for medical instruments such as intravascular stents and wound dressings.

The application discloses a reverse osmosis membrane preparation method based on plasma polymerization, a reverse osmosis membrane and application; the application designs a reverse osmosis membrane preparation method, a base film is subjected to surface treatment through an aqueous phase, a first polymerization chamber atmosphere, a first polymerization chamber gas is introduced to carry out a first step plasma polymerization; in the polymerization process, the back of the base film is pasted on a back plate with a heating function through polymerization deposition, plasma polymerization is continuously carried out, polymerization is stopped and the film piece is placed in an oven for drying; the film piece is placed in a second polymerization chamber, a second polymerization chamber atmosphere, a second polymerization chamber gas is introduced to carry out a second step plasma polymerization; a second polymerization chamber supplementary gas is added, and the process is continued; the film piece is subjected to oxidation protection modification treatment, is immersed in a mixed solution of sodium bisulfite glycerol, is taken out for drying, and a reverse osmosis membrane is obtained. The application also provides a reverse osmosis membrane prepared by the above preparation method and application of the reverse osmosis membrane in the field of water treatment.

This invention relates to a hollow cathode plasma polymerization method for use on fabric substrates, particularly a method for applying a fluoropolymer coating, especially a waterproof and / or oil-resistant coating, to fabric substrates, and products that can be obtained by such methods and systems.

The invention provides an electromagnetic shielding and anti-corrosion integrated functional film for a metal base material and a preparation method thereof, and relates to the technical field of metal base material functional films, the electromagnetic shielding and anti-corrosion integrated functional film comprises a film body, the film body is composed of a bottom layer, an electromagnetic shielding layer and an anti-corrosion layer, the electromagnetic shielding layer covers the bottom layer, the anti-corrosion layer covers the electromagnetic shielding layer, and the anti-corrosion layer covers the bottom layer. The bottom layer is a composite layer formed by nano zirconium oxide / graphene, the electromagnetic shielding layer is of an MXene two-dimensional material / silver nanowire gradient structure, and the anti-corrosion layer is a polytetrafluoroethylene / silicon dioxide hybrid coating. The polytetrafluoroethylene / silicon dioxide hybrid coating forms a compact structure through plasma polymerization, water and oxygen erosion can be more effectively prevented, the sol-gel method and the plasma polymerization are both carried out at low temperature, energy consumption is lower than that of a traditional electroplating process, and reliability and practicability of the functional film are improved.

An acrylic acid plasma polymerization film containing C: 35 at % to 45 at %, and O: 7 at % to 12 at %, the balance being H and impurities, and a method for producing the acrylic acid plasma polymerization film, including: joining plasma generated from a first gas and a second gas containing an acrylic acid-based monomer.

The invention relates to a method of producing an object having a fluorinated polymer coating free of per- and polyfluorinated acids and salts thereof, wherein the method comprises a step DF of depositing a fluorinated polymer coating on the object by means of plasma polymerization of a fluorinated precursor monomer and a step IG of exposing the object to an inhibiting gas which inhibits the formation of per- and polyfluorinated acids and salts thereof in or on the deposited fluorinated coating. Thereby step IG is carried out after step DF, and from the start of step DF until the end of step IG the object is treated in a substantially oxygen free atmosphere.

The present invention relates to a hollow cathode plasma polymerization process applied to a textile substrate, in particular to a process for applying to a textile substrate a halogen-free, in particular fluorine-free, water repellent polymer coating, in particular a durable water repellent coating, and to products obtainable by such processes and systems.

This invention provides a surface-coated in-situ modified hollow fiber membrane material and its preparation method. The preparation method includes the following steps: Step 1, preparing a casting solution; the casting solution is used to prepare a hollow fiber membrane precursor through a spinning process; Step 2, the hollow fiber membrane precursor is sequentially passed through an air gap, a cooling tank, and a solvent exchange tank to obtain a semi-finished membrane; the coolant in the cooling tank is a plasma-treated ethylene glycol aqueous solution; Step 3, the semi-finished membrane is further surface-treated with plasma to obtain a hollow fiber membrane containing a surface polyethylene glycol coating structure. This invention fully utilizes the components of the coolant and combines it with plasma polymerization treatment to perform in-situ modification on the surface of the hollow fiber membrane, rapidly and efficiently forming a polyethylene glycol coating on the surface of the hollow fiber membrane.

The invention relates to a method of producing a fabric having a halogen free plasma coating, having a hydro- and oleophobic characteristics, wherein the method comprises: step DHF of depositing a plasma coating on the fabric by means of plasma polymerization of a halogen free precursor monomer by plasma-enhanced chemical vapor deposition method (PECVD), wherein the halogen free precursor monomer are organosilane, siloxane and / or hydrocarbon precursors, wherein the plasma-enhanced chemical vapor deposition is carried out as a low-pressure plasma processes under protective atmosphere, wherein the fabric comprises of a woven monofilament fabric of polymeric material having a filament diameter between 10 µm to 150 µm and a mesh opening between 5 µm and 200 µm.

The present invention relates to the etching method within the scope of semiconductor device fabrication processes, in particular; relates to an etching method developed for the epitaxial structure (10) of a type-2 InAs / GaSb superlattice semiconductor device, which minimizes the device performance degrading effects encountered after etching, comprising the process steps of etching the InAs / GaSb layers in a plasma environment with selected etching gases, forming an etching zone, cooling and coating the InAs / GaSb layers with plasma polymerization gases to eliminate the negative effects of the exposed bonds on the performance, respectively, with at least three repetitions.

The invention discloses a surface coating method for a copper-clad plate, which comprises the following steps: placing the copper-clad plate in a vacuum chamber, and controlling the air pressure in the vacuum chamber to be a first preset air pressure; a gaseous acrylate monomer and nitrogen are introduced into the vacuum chamber, and the air pressure in the vacuum chamber is adjusted to be second preset air pressure; and carrying out plasma polymerization reaction on the surface of the copper-clad plate by adopting a plasma polymerization technology so as to form the protective film. According to the technical scheme, the purpose of heat dissipation can be achieved by coating the surface of the copper-clad plate with the film, and the problem of uneven dispersion when the surface of the copper-clad plate is coated with the heat dissipation coating is avoided.